Trail Running Calendar East of England 2026-2027

Nuclear Rush is a muddy obstacle race at the Secret Nuclear Bunker Estate in Essex featuring 6 km with 40 plus obstacles and 12 km with 70 plus obstacles, plus signature features such as the 20 foot Deathslide and multi lane zip wires.

A national OCR event at Nuclear Rush supported by British Obstacle Sports, the British OCR Championship runs a 12K plus route with 60 plus mandatory obstacles across mud, water and rugged terrain. It is chip timed, for 18 plus, and awards m..

A weekend of muddy obstacle races at the Secret Nuclear Bunker Estate in Essex, with distances from 1.5 km to 38+ km, signature obstacles like the Deathslide and zip lines, chip timing and on-site facilities.

A 5 km run at Banham Zoo on 09/05/2026, taking participants through parkland and a lap around the zoo with animal views. Entry includes full day zoo access and a finisher medal while supporting conservation and fundraising.

A Pretty Muddy 5k obstacle course at Norfolk Showground featuring climb, crawl and slide elements on a mostly flat route contained within the showground. Participants must be 13 or older and a minimum fundraising target of £50 applies.

A 30th anniversary road marathon organised by Halstead Road Runners, set on scenic low traffic roads in North Essex. The event supports local charities, forms part of the Essex championships and limits entries to 500.

A road marathon and half marathon based at Suffolk Running Centre near Bury St Edmunds, using measured routes with aid stations every 10 km. Entries include parking and a bespoke finisher medal; the event is cupless so bring your own bottle..

A self guided 13 mile run around the Garden City Greenway in Letchworth Garden City, starting and finishing at Standalone Farm. Run under UKA rules with a three hour time limit and profits donated to GRIT charity.

A guided 30 km trail run in the Chiltern Hills with trail technique instruction, checkpoints, a finisher’s medal and Trees not Tees certificate, based near Tring Station with limited spaces.

A trail running event conceived to increase participation from Black people, people of the global majority and allies. It offers 1K, 5K and 10K distances, children's entries are free under 16, and the day includes food, live music and activ..

A cross country event in Little Gaddesden on 10 May 2026 offering 10K, 5K and mini races for under 7s. Pre registration and on the day fees apply and medals are awarded to all finishers.

A self‑navigated trail event in Thaxted on 10 May 2026 raising funds for Thaxted Windmill restoration. Two route options are offered, 5 miles (8k) and 8.25 miles (13k), with entry fees and a refreshment voucher included.

A measured off-road 5K on 13 May 2026, Race 2 of the seven-race Crown to Crown series, run mainly on bridleways through Willow Park with limited parking and on-course safety support.

A coastal point-to-point trail event in Suffolk and Essex offering 100 mile, 50 mile and 50 km options with GPS tracking, regular checkpoints and a mandatory kit list. Routes run mostly on soft dirt trail through protected landscapes.

A timed lapped event at Mowsbury Park on 16 May 2026 offering distances from 5 km to ultra with a seven hour time limit, flexible start window and both medal and no medal entry options; places capped at 75.

Race for Life Brentwood at Weald Country Park on 16 May 2026 offers 3k, 5k and a double lap 10k across grass and woodland trails. The event is chip timed and carries a minimum fundraising target of £50.

Trail races over 10 and 5 miles at Cammas Hall Farm on 17 May 2026, using farm tracks and woodland trails. Marshals, water stations, parking and finish-line facilities are provided; transfers allowed before the deadline.

The Bury to Clare Challenge is an 18-mile point-to-point journey from Bury St Edmunds to Clare through West Suffolk's countryside. This well-marked run or walk supports St Nicholas Hospice Care. Participants receive a finisher's medal, with..

A fully guided 36 miles along the Boudicca Way from Diss to Norwich Station on 17 May 2026. This non competitive, social paced event features stocked aid stations, a bespoke wooden medal and a supplied kit list.

Experience an annual five mile off road run through the scenic Little Haven Nature Reserve. This trail race features woodland paths and spring meadows while raising funds for local hospice care.